ホスト-ゲストドープシステムにおける同種族室温リン光のデクスター型三重項-三重項エネルギー移動の解明

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Updated: Jan 23, 2026

Integrating a Triplet-triplet Annihilation Up-conversion System to Enhance Dye-sensitized Solar Cell Response to Sub-bandgap Light

Integrating a Triplet-triplet Annihilation Up-conversion System to Enhance Dye-sensitized Solar Cell Response to Sub-bandgap Light

Published on: September 12, 2014

Subin Hao¹, Jiayu Li², Guangxin Yang³

¹College of Chemistry and Chemical Engineering, Key (Guangdong-Hong Kong Joint) Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong 515063, P. R. China.

The journal of physical chemistry letters

|January 22, 2026

Abstract:

Intermolecular energy transfer plays an important role in organic-doped room-temperature phosphorescence (RTP). However, it is difficult to precisely design high-performance RTP by organic-doped systems unless the insight into luminescence is clear. Here, the luminescent mechanism using benzophenone (BP) as host and BP's homologues as guests is investigated by steady-state and delayed photoluminescence, time-resolved transient absorption, and theoretical calculations. A Dexter-type triplet-triplet energy transfer between the host and guest is confirmed. The triplet energy gap (ΔE_T) between host and guest, with values around 0.35 eV, is significant for RTP with high phosphorescence quantum yields and long lifetime. These results pave the way for precise control strategies for luminescent color, lifetime, and quantum yield in homologue-doped RTP.

キーワード:

室温リン光デクスター型エネルギー移動三重項エネルギーギャップホスト-ゲストシステム有機化学光物理学

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Synthesis and Calibration of Phosphorescent Nanoprobes for Oxygen Imaging in Biological Systems

Synthesis and Calibration of Phosphorescent Nanoprobes for Oxygen Imaging in Biological Systems

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Triplet Fusion Upconversion Nanocapsule Synthesis

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Published on: September 7, 2022

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